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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug c++/106652] [C++23] P1467 - Extended floating-point types and standard names Date: Wed, 24 Aug 2022 16:56:49 +0000 [thread overview] Message-ID: <bug-106652-4-NsdFUOhnNa@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-106652-4@http.gcc.gnu.org/bugzilla/> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106652 --- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Testcase for the already implemented features: // P1467R9 - Extended floating-point types and standard names. // { dg-do compile { target c++23 } } // { dg-options "" } namespace std { #ifdef __STDCPP_FLOAT16_T__ using float16_t = _Float16; #endif #ifdef __STDCPP_FLOAT32_T__ using float32_t = _Float32; #endif #ifdef __STDCPP_FLOAT64_T__ using float64_t = _Float64; #endif #ifdef __STDCPP_FLOAT128_T__ using float128_t = _Float128; #endif template<typename T, T v> struct integral_constant { static constexpr T value = v; }; typedef integral_constant<bool, false> false_type; typedef integral_constant<bool, true> true_type; template<class T, class U> struct is_same : std::false_type {}; template <class T> struct is_same<T, T> : std::true_type {}; } #ifdef __STRICT_ANSI__ #undef __SIZEOF_FLOAT128__ #endif using namespace std; static_assert (is_same<decltype (0.0f), float>::value); static_assert (is_same<decltype (0.0F), float>::value); static_assert (is_same<decltype (0.0), double>::value); static_assert (is_same<decltype (0.0l), long double>::value); static_assert (is_same<decltype (0.0L), long double>::value); static_assert (is_same<decltype (0.0f + 0.0F), float>::value); static_assert (is_same<decltype (0.0F + 0.0f), float>::value); static_assert (is_same<decltype (0.0 + 0.0), double>::value); static_assert (is_same<decltype (0.0l + 0.0L), long double>::value); static_assert (is_same<decltype (0.0L + 0.0l), long double>::value); #ifdef __SIZEOF_FLOAT128__ static_assert (is_same<decltype (0.0q), __float128>::value); static_assert (is_same<decltype (0.0Q), __float128>::value); static_assert (is_same<decltype (0.0q + 0.0q), __float128>::value); static_assert (is_same<decltype (0.0Q + 0.0Q), __float128>::value); #endif #ifdef __STDCPP_FLOAT16_T__ static_assert (is_same<decltype (0.0f16), float16_t>::value); static_assert (is_same<decltype (0.0F16), float16_t>::value); static_assert (is_same<decltype (0.0f16 + 0.0f16), float16_t>::value); static_assert (is_same<decltype (0.0F16 + 0.0F16), float16_t>::value); #endif #ifdef __STDCPP_FLOAT32_T__ static_assert (!is_same<decltype (0.0f), float32_t>::value); static_assert (!is_same<decltype (0.0F), float32_t>::value); static_assert (is_same<decltype (0.0f32), float32_t>::value); static_assert (is_same<decltype (0.0F32), float32_t>::value); static_assert (!is_same<decltype (0.0f32), float>::value); static_assert (!is_same<decltype (0.0F32), float>::value); static_assert (is_same<decltype (0.0f32 + 0.0f32), float32_t>::value); static_assert (is_same<decltype (0.0F32 + 0.0F32), float32_t>::value); #endif #ifdef __STDCPP_FLOAT64_T__ static_assert (!is_same<decltype (0.0), float64_t>::value); static_assert (is_same<decltype (0.0f64), float64_t>::value); static_assert (is_same<decltype (0.0F64), float64_t>::value); static_assert (!is_same<decltype (0.0f64), double>::value); static_assert (!is_same<decltype (0.0F64), double>::value); static_assert (is_same<decltype (0.0f64 + 0.0f64), float64_t>::value); static_assert (is_same<decltype (0.0F64 + 0.0F64), float64_t>::value); #endif #ifdef __STDCPP_FLOAT128_T__ static_assert (!is_same<decltype (0.0l), float128_t>::value); static_assert (!is_same<decltype (0.0L), float128_t>::value); static_assert (is_same<decltype (0.0f128), float128_t>::value); static_assert (is_same<decltype (0.0F128), float128_t>::value); static_assert (!is_same<decltype (0.0f128), long double>::value); static_assert (!is_same<decltype (0.0F128), long double>::value); static_assert (is_same<decltype (0.0f128 + 0.0f128), float128_t>::value); static_assert (is_same<decltype (0.0F128 + 0.0F128), float128_t>::value); #ifdef __SIZEOF_FLOAT128__ static_assert (!is_same<decltype (0.0q), float128_t>::value); static_assert (!is_same<decltype (0.0Q), float128_t>::value); static_assert (!is_same<decltype (0.0f128), __float128>::value); static_assert (!is_same<decltype (0.0F128), __float128>::value); #endif #endif static_assert (is_same<decltype (0.0f + 0.0), double>::value); static_assert (is_same<decltype (0.0 + 0.0F), double>::value); static_assert (is_same<decltype (0.0L + 0.0), long double>::value); static_assert (is_same<decltype (0.0 + 0.0L), long double>::value); static_assert (is_same<decltype (0.0L + 0.0f), long double>::value); static_assert (is_same<decltype (0.0F + 0.0l), long double>::value); #if defined(__STDCPP_FLOAT16_T__) && defined(__STDCPP_FLOAT32_T__) static_assert (is_same<decltype (0.0f16 + 0.0f32), float32_t>::value); static_assert (is_same<decltype (0.0F32 + 0.0F16), float32_t>::value); #endif #if defined(__STDCPP_FLOAT16_T__) && defined(__STDCPP_FLOAT64_T__) static_assert (is_same<decltype (0.0f16 + 0.0f64), float64_t>::value); static_assert (is_same<decltype (0.0F64 + 0.0F16), float64_t>::value); #endif #if defined(__STDCPP_FLOAT16_T__) && defined(__STDCPP_FLOAT128_T__) static_assert (is_same<decltype (0.0f16 + 0.0f128), float128_t>::value); static_assert (is_same<decltype (0.0F128 + 0.0F16), float128_t>::value); #endif #if defined(__STDCPP_FLOAT32_T__) && defined(__STDCPP_FLOAT64_T__) static_assert (is_same<decltype (0.0f32 + 0.0f64), float64_t>::value); static_assert (is_same<decltype (0.0F64 + 0.0F32), float64_t>::value); #endif #if defined(__STDCPP_FLOAT32_T__) && defined(__STDCPP_FLOAT128_T__) static_assert (is_same<decltype (0.0f32 + 0.0f128), float128_t>::value); static_assert (is_same<decltype (0.0F128 + 0.0F32), float128_t>::value); #endif #if defined(__STDCPP_FLOAT64_T__) && defined(__STDCPP_FLOAT128_T__) static_assert (is_same<decltype (0.0f64 + 0.0f128), float128_t>::value); static_assert (is_same<decltype (0.0F128 + 0.0F64), float128_t>::value); #endif #ifdef __STDCPP_FLOAT32_T__ #if __FLT_MAX_EXP__ == __FLT32_MAX_EXP__ && __FLT_MANT_DIG__ == __FLT32_MANT_DIG__ static_assert (is_same<decltype (0.0f + 0.0f32), float32_t>::value); static_assert (is_same<decltype (0.0F32 + 0.0F), float32_t>::value); #endif #if __DBL_MAX_EXP__ > __FLT32_MAX_EXP__ && __DBL_MANT_DIG__ > __FLT32_MANT_DIG__ static_assert (is_same<decltype (0.0 + 0.0f32), double>::value); static_assert (is_same<decltype (0.0F32 + 0.0), double>::value); #endif #if __LDBL_MAX_EXP__ > __FLT32_MAX_EXP__ && __LDBL_MANT_DIG__ > __FLT32_MANT_DIG__ static_assert (is_same<decltype (0.0L + 0.0f32), long double>::value); static_assert (is_same<decltype (0.0F32 + 0.0l), long double>::value); #endif #endif #ifdef __STDCPP_FLOAT64_T__ #if __FLT_MAX_EXP__ < __FLT64_MAX_EXP__ && __FLT_MANT_DIG__ < __FLT64_MANT_DIG__ static_assert (is_same<decltype (0.0f + 0.0f64), float64_t>::value); static_assert (is_same<decltype (0.0F64 + 0.0F), float64_t>::value); #endif #if __DBL_MAX_EXP__ == __FLT64_MAX_EXP__ && __DBL_MANT_DIG__ == __FLT64_MANT_DIG__ static_assert (is_same<decltype (0.0 + 0.0f64), float64_t>::value); static_assert (is_same<decltype (0.0F64 + 0.0), float64_t>::value); #endif #if __LDBL_MAX_EXP__ > __FLT64_MAX_EXP__ && __LDBL_MANT_DIG__ > __FLT64_MANT_DIG__ static_assert (is_same<decltype (0.0L + 0.0f64), long double>::value); static_assert (is_same<decltype (0.0F64 + 0.0l), long double>::value); #endif #if __LDBL_MAX_EXP__ == __FLT64_MAX_EXP__ && __LDBL_MANT_DIG__ == __FLT64_MANT_DIG__ \ && __DBL_MAX_EXP__ == __FLT64_MAX_EXP__ && __DBL_MANT_DIG__ == __FLT64_MANT_DIG__ // An extended floating-point type with the same set of values as more than one // cv-unqualified standard floating-point type has a rank equal to the rank of // double. // Then long double will have higher rank than float64_t. static_assert (is_same<decltype (0.0L + 0.0f64), long double>::value); static_assert (is_same<decltype (0.0F64 + 0.0l), long double>::value); #endif #endif #ifdef __STDCPP_FLOAT128_T__ #if __FLT_MAX_EXP__ < __FLT128_MAX_EXP__ && __FLT_MANT_DIG__ < __FLT128_MANT_DIG__ static_assert (is_same<decltype (0.0f + 0.0f128), float128_t>::value); static_assert (is_same<decltype (0.0F128 + 0.0F), float128_t>::value); #endif #if __DBL_MAX_EXP__ < __FLT128_MAX_EXP__ && __DBL_MANT_DIG__ < __FLT128_MANT_DIG__ static_assert (is_same<decltype (0.0 + 0.0f128), float128_t>::value); static_assert (is_same<decltype (0.0F128 + 0.0), float128_t>::value); #endif #if __LDBL_MAX_EXP__ <= __FLT128_MAX_EXP__ && __LDBL_MANT_DIG__ <= __FLT128_MANT_DIG__ \ && __LDBL_MANT_DIG__ != 106 // IBM extended long double and IEEE quad are unordered. static_assert (is_same<decltype (0.0L + 0.0f128), float128_t>::value); static_assert (is_same<decltype (0.0F128 + 0.0l), float128_t>::value); #endif #ifdef __SIZEOF_FLOAT128__ static_assert (is_same<decltype (0.0Q + 0.0f128), float128_t>::value); static_assert (is_same<decltype (0.0F128 + 0.0q), float128_t>::value); #endif #endif For e.g. powerpc64le-linux, would be nice to repeat the testcase with -mlong-double-64 -mlong-double-128 -mabi=ibmlongdouble -mlong-double-128 -mabi=ieeelongdouble options. Also, we should have a mangling testcase, one generic and one for the __float128 target specific mangling etc. and then once [over.ics.rank] is implemented, something to test that.
next prev parent reply other threads:[~2022-08-24 16:56 UTC|newest] Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top 2022-08-16 17:14 [Bug c++/106652] New: " mpolacek at gcc dot gnu.org 2022-08-24 14:27 ` [Bug c++/106652] " jakub at gcc dot gnu.org 2022-08-24 14:49 ` jakub at gcc dot gnu.org 2022-08-24 16:56 ` jakub at gcc dot gnu.org [this message] 2022-08-24 17:35 ` joseph at codesourcery dot com 2022-08-25 12:51 ` jakub at gcc dot gnu.org 2022-08-25 12:55 ` jakub at gcc dot gnu.org 2022-08-25 14:39 ` jakub at gcc dot gnu.org 2022-09-09 9:44 ` jakub at gcc dot gnu.org 2022-09-09 18:12 ` jakub at gcc dot gnu.org 2022-09-10 10:20 ` jakub at gcc dot gnu.org 2022-09-10 10:22 ` jakub at gcc dot gnu.org 2022-09-10 17:28 ` jakub at gcc dot gnu.org 2022-09-10 17:31 ` jakub at gcc dot gnu.org 2022-09-10 18:13 ` jakub at gcc dot gnu.org 2022-09-27 6:18 ` cvs-commit at gcc dot gnu.org 2022-10-18 9:43 ` cvs-commit at gcc dot gnu.org 2022-10-19 9:26 ` cvs-commit at gcc dot gnu.org 2022-11-19 9:24 ` jakub at gcc dot gnu.org 2022-11-28 22:31 ` pinskia at gcc dot gnu.org 2022-12-09 15:20 ` pinskia at gcc dot gnu.org 2023-08-21 15:57 ` igorkuo at meta dot ua 2023-08-22 14:15 ` cvs-commit at gcc dot gnu.org 2023-08-22 14:16 ` cvs-commit at gcc dot gnu.org
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